Where to put the copy sheet activitiy in my work flow

The goal is to create the new sheet in existing file, when current row of the DT data is not existed in each sheets of one excel file . i dont know how to do it. please see the pic .
The question is in the sheet.xaml but invoke in main .
thank you for your help in advnce.

Main.xaml (7.0 KB) Sheet.xaml (7.8 KB) DT.xlsx (9.0 KB) heetFile.xlsx (9.2 KB)

Hi @eimon,
You can create new sheet in existing file using “Append Range” activity.